Abstract: A plastic container closure has a screw cap with a cylindrical casing having an internal screw thread and a lid disc adjoining the casing, a security ring connected by first break-off webs to a free edge of the casing and a holding ring in the region of the container neck. The security ring has slots distributed over its circumference and each have a top edge and a bottom edge, wherein the top edge is formed by a section of the security ring that extends in the shape of a circular arc. The bottom edge is formed by a wall section that is inclined inwards in a radial direction. The bottom edge of each slot engages in a form-fitting manner with the holding ring.

Abstract: A container closure for a pour opening of a container has a first holding strip with a first and a The first end is connected to a free edge of the screw cap and a second end is connected to a security ring. A second holding strip has a third end connected to the free edge of the screw cap and a fourth end connected to the security ring. The first, second, third and fourth ends are arranged one after the other in the-acircumferential direction on the free edge and on the security ring. A first tongue has a first end and a second tongue has a second tongue end and adjoining the first tongue and is arranged between the second and the third ends. The second tongue is part of the security ring and, in an open position, the first tongue end comes into contact with the second tongue end.